This is the background: "A metorite hits the countryside somewhere and reveals to be the egg of a giant Spider. You are in command of an Army unit with a vital mission: kill it.... and save the Earth!"
You need a 60x60cm board, some terrain features and some Infantry, Jeeps and one Tank, ideally 1/300 scale. And of course, a Spider (or a Bug, a Scorpion... just change the name of the game!)
It is a fun solo game if you don't have any other intelligent thing to do; you can even play it with other people and make your own scenarios... will you defeat the monster Spider?